Page:Origin of metallic currency and weight standards.djvu/365

 worth an Aeginetan obol, and Pollux goes on to say that "one would find in him (Aristotle) in his Constitution of the Himeraeans likewise other names of Sicilian coins, such as ungia, which is equivalent to one chalcus, and hexas, which is equivalent to two chalci, and trias, which is equivalent to three chalci, and hemilitron (half litra), which is equivalent to six, and litra which is equivalent to an obol ." It is plain from this that Aristotle knew that the Aeginetic obol was divided into twelve chalci. Thus the proposition laid down above, that the ancient Greek copper obol was a rod or spike divided into 12 parts, is thoroughly proved. The reason why the Attic obol had only 8 chalci is now plain; it was, as we saw, only two-thirds of the Aeginetan and consequently only contained two-thirds of the whole number of pieces of copper into which the ancient copper unit was divided. Now, as we find the Chalcidian settlers of Himera and other places not using their native Euboic standard for coining, but employing the Aeginetic, and as the Aeginetic obol was equal to the Sicilian litra, we are justified in the conclusion, that when the Greek settlers reached Italy and Sicily they found their Italic kinsfolk using a copper unit exactly the same as that employed in Greece; and that finally, when they began to coin, they found it more convenient to strike silver on a standard which was both convenient in reference to exchange with gold, as I have shown above, and had the further advantage of corresponding accurately in value to the ancient copper unit in use among the Sicels. If, as I indicated, silver was to copper as 300:1, the Aeginetic silver obol of 16-2/3 grs. would be worth 5000 grs. of copper (practically the same as the early Roman libra). It follows then that if we could only discover the weight of the Sicilian litra we should know that of the old Greek copper obol. Is this possible? We have no reason to doubt that the obol was a rod of copper of a certain size, which in the course of time after the introduction of coined money shrank up until the original rod was only represented by what had been its equivalent in silver, or a small copper coin, whose name still survives in the ob used in old account books as the symbol for